After analyzing the regularity of solutions to delay differential equations (DDEs) with piecewise continuous (linear) non-vanishing delays, we describe collocation schemes using continuous piecewise polynomials for their numerical solution. We show that for carefully designed meshes these collocation solutions exhibit optimal orders of global and local superconvergence analogous to the ones for DDEs with constant delays. Numerical experiments illustrate the theoretical superconvergence results.
Scopus Subject Areas
- Applied Mathematics
- Collocation methods
- Delay differential equations
- Optimal order of superconvergence
- Piecewise non-vanishing delays
- Regularity of solutions